Question

1.Wykonaj podane działania

a.-5 1/3*(-1 1/2)+5/8:(-3 3/4)

b. -6 1/2:5 1/5+2 1/4:(-1 1/5)

2 Wykonaj podane działania

a.2,7-4,2:(-0,7)+16*(-0,5)

b.3,4-3,6:0,9-12*(-0,5)

Answer 1

1.

a) - 5 1/3 * (-1 1/2) + 5/8 : (-3 3/4) =

= - 16/3 * (-3/2) + 5/8 : (-15/4)=

= - 16/2 + 5/8 * (-4/15)=

= - 8 - 1/6 =

= - 8 1/6

 

b) - 6 1/2 : 5 1/5 + 2 1/4 : (- 1 1/5)=

= - 13/2 : 26/5 + 9/4 : (-6/5)=

= - 13/2 * 5/26 + 9/4 * (-5/6)=

= 5/4 - 15/8 =

= 10/8 - 15/8 =

= - 5/8